Heat transfer enhancement by combination of chaotic advection and nanofluids flow in helically coiled tube

Tohidi, A., Ghaffari, H., Nasibi, H. and Mujumdar, A. S. (2015) Heat transfer enhancement by combination of chaotic advection and nanofluids flow in helically coiled tube. Applied Thermal Engineering: design, processes, equipment, economics, 86 91-105. doi:10.1016/j.applthermaleng.2015.04.043

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Author Tohidi, A.
Ghaffari, H.
Nasibi, H.
Mujumdar, A. S.
Title Heat transfer enhancement by combination of chaotic advection and nanofluids flow in helically coiled tube
Journal name Applied Thermal Engineering: design, processes, equipment, economics   Check publisher's open access policy
ISSN 1359-4311
1873-5606
Publication date 2015-04-28
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.applthermaleng.2015.04.043
Open Access Status File (Author Post-print)
Volume 86
Start page 91
End page 105
Total pages 15
Place of publication Oxford, United Kingdom
Publisher Pergamon Press
Collection year 2016
Language eng
Formatted abstract
In this study, two passive techniques are simultaneously investigated for heat transfer improvement (i.e. chaotic advection and nanofluids) in coiled heat exchangers. Performance of these two different coils (one with normal configuration and another with chaotic configuration) is numerically analyzed and compared for both water and nanofluid as fluid. Effects of different parameters such as geometry, types of nanofluids, nanoparticle volumetric concentration and Reynolds number on heat transfer and pressure drop are studied. The CuO and Al2O3 base water nanofluids with different nanoparticle concentrations 1-3% were simulated. Equations of conservation of mass, momentum and energy were discretized using a finite element based technique and were solved using ANSYS software. Numerical results showed that heat transfer in the chaotic coil with water as fluid was higher than that in the normal coil with nanofluids at various volumetric concentrations and addition small amount of nanofluid in the chaotic coil flow resulted in significant enhancement of heat transfer.
Keyword Chaotic advection
Heat transfer
Helical coiled tube
Nanofluids
Pressure loss
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Agriculture and Food Sciences
Official 2016 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 5 times in Scopus Article | Citations
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